Electric coffeepot



April 23, 1935. A. D. oLDs ELECTRIC CoFFEEPo'r Filed Nov. 2o; 193:5

Patented Apr.' 23,"17935 PATENT OFFICE a ELECTRIC Acorrlnno'r Ambrose D.Olds, Wichita, Kans., assignor to The 1 Coleman Lamp and Stove Company,

Kans., a. corporation of Wichita,

Kansas- Application November zo, 1933, serial No. 698,836

9 claims.v (ci. 21a- 43) This` invention relates to expansion joints foreffecting a seal between a receptacle and a base where the receptacleand base have diierent coefficients of expansion.

Primarily, the invention is designed for use in connection with electriccotlee pots in which the receptacle or bottle is made of glass,porcelain or similar material, and in which the base is made of metal orsome material different from that o'f which the receptacle isconstructed. The device is so arranged that ample provision is made forthe expansion and contraction of the joint be- Ytween the' receptacleand the base.4

The novelty of the invention will be clearly understood by reference tothe following description in connection with the accompanying drawing inwhich:

Figure 1 is a side elevational view of a coffee pot, the base of thejoint .being shown in sections, and 9 Figure 2 is a top plan view of theclamping y member of the receptacle.

'other suitable yielding lmaterial. The iiange 5 has an inturned lip Ilengaging the shoulder I2 on the well 1. A gasket I3 rests on the flangeandl receives a nut Il to clamp the well to the base. Above the nut I4is a spider disc I5, in the form of a springwasher having radial arms Ittol rest upon the bottom Il of the receptacle 3. A nut IB on the nut Ilclamps the washer` l5' to the nut Il so that by turning the nut il the`receptacle is drawn down 'against the ring-shaped gasket to compress itto form a seal between the base and the receptacle sealing off the spacewhich it surrounds. Therefore, when. the liquid in the receptaclereaches a high enough temperature to cause expansion of the receptacle,the yielding joint formed by the gasket I0 and its appurtenances, willcompensate for the differences in the co-emcients of expansion betweenvthe base and the receptacle so that provision is made in a convenientmanner for the differences in expansion between the receptacle and thebase.

What-I claim is: v

1. A liquid receptacle 'having an opening in its' bottom.' surrounded bya cnical ilange, a base having a recessed seat. provided with a verticalwall, a yielding ring-shaped gasket on the seat between the wall of theseat and the flange, and a yielding clamping means to compress thegasket between the receptacle and the base to expand the gasketlaterally to provide a seal.

2. A liquid receptacle having an opening in its bottom, surrounded by aange, a base having a seat with a vertical wall spaced from the flange,a ring shaped gasket in the seat surrounding the flange, said gaskethaving upward converging sides and yielding means for drawing thereceptacle d own on the gasket to expand it laterally against the flangeand the side wall.

3. A liquid receptacle having an opening in its l bottom, surrounded bya depending ange, a base havinga top recess forming a seat with a sidewall spaced from its flange, a yielding gasket surrounding the flange,resting upon the seat, a clamping member extending upwardly from theseat and through the opening and .a yielding clamping member adjustableon the rst named clamping member, to clamp the receptacle against thegasket to expand it laterally.'

, 4. In a device of the class described, a base having a seat with aside wall, a yielding ring shaped gasket on the seat, a receptaclehaving' a depending flange overlapping the gasket, and a yielding meansfor clamping the base and the receptacle together toexpand the gasketlaterany. v A 5.-In a device o! the class described, a base having aseat provided with side wall, a receptacle having an opening in itsbottom, surrounded by a flange, a percolator well unit carried by thebase extending through the opening in the receptacle, a yielding gasketbetween the receptacle and the base surrounding the opening andcompressible between the wall of the seat and the flange, and a yieldingmeans for clamping the receptacle, the gasket and the base together toform a seal, said means being connected to the percolator. well unit.- Y

6. A liquid receptaclehaving an opening in its bottom, having a seat, ayielding gasket surrounding the opening and resting upon the seat, anupstandingmember on the base projecting through the opening and a springclamping member on the upstanding vmember .having radial' 'ngers restingupon the bottom of the receptacle vto clamp it against the gasket and tocompensate for inequalities in the bottomof there'ceptacle resting uponthe gasket.

7. A liquid receptacle having an opening in its bottom, a base having aseat, a yielding gasket surrounding the opening and resting upon theseat, an upstanding member on the base projecting through the openingand a spring clamping member on the upstanding member having radialiingers resting upon the bottom of the receptacle to clamp it againstthe gasket and to compensate for inequalities in the bottom of thereceptacle resting upon the gasket and a nut threaded on thev upstandingmember bearing against the spring clamping member to hold the springclamping member in place.

8. A liquid receptacle having an opening in its bottom surrounded bydepending Ilange, a base having a top recess forming a seat with a sidewall spaced from the ange' to provide a gasket receiving space, ayielding gasket in the space resting upon the seat, an upstanding memberextending from the seat through the yopening and a, yielding clampingmember adjustable on thev upstanding member overlappingthe bottom of thereceptacle surrounding the opening to compensate i'or inequalities inthe bottom of the receptacle resting upon the gasket and eective toexpand the gasket laterally in the space to :form a seal.

9. In a device of the class described a base, a yielding ring shapedgasket on the base, a receptacle having a different coefiicient ofexpansion than the base and provided with an opening in its bottom, aflange surrounding the opening projecting into and lying against theinner wall of the gasket and means for clamping the base and receptacleto the gasket to form a seal AMBROSE D. OLDS.

